Did you know that it has been 20 years since the first version of Photoshop was introduced? That is quite a lot of time for an application. Photoshop has definitely changed our lives and the way we work with imaging (now digital imaging). It also has changed a lot through all these years. Many wonderful new features were introduced in every major version.
Did you know that Photoshop 1.0 was released on Macintosh only? It was created by John and Thomas Knoll. Did you know that it was first called Display before it became Photoshop? Probably not.
Photoshop 1.0 was released in 1990 as Adobe Photoshop and its Toolbar at that time looked somehow similar to Photoshop CS4′s Toolbar, don’t you think?

Photoshop 1.0′s interface was very simple with limited number of menus as on screenshot below, however there were many filters included in the application. Only a few adjustment though as can be seen on the screenshot below.

And there were only two panels at that time.

The most important features introduced in Photoshop major releases:
- Ps 2.0 – Photoshop ships on Windows for the first time, Pen Tool, Duotones, support for CMYK
- Ps 3.0 – Layers and Tabbed Palettes introduced
- Ps 4.0 – Actions, Adjustment Layers
- Ps 5.0 – Editable Text, History Palette
- Ps 6.0 – Blending Options, Layer Styles, Vector Shapes
- Ps 7.0 – Healing Brush, New File Browser (later replaced by Bridge), Batch Rename
- Ps CS – Lens Blur, Layer Groups, 16-Bit support
- Ps CS2- Noise Reduction, Red Eye Removal Tool, Vanishing Point, 32-Bit support
- Ps CS3- Auto Blend, Quick Selection Tool, Clone Source Palette, 3D
- PS CS4-Content Aware Scaling, Masks and Adjustments Panels
- Ps CS5-coming soon…